I had a look through that, thanks. It looks like the setup he is using is similar, we are both triggering on the hall sensors then looking at the rising edge of the hall sensor compared to the motor signal. The only difference is he changing the x axis, where I like to see the complete waveform. A big difference though is that I have been using the motolyser to run my tests and not an esc. So I tried using my hobbywing xr10 pro. The output for the motor looks easier to work with, more comparable to a square wave at full throttle, which I should be able to read with the arduino on a digital input. I measured a few motors and they all seem about 20* off, so that just may be my offset I program in. Here is a pic using the xr10 pro. And now, I'll need to test on other esc's and motors...





EDIT:

It was really cool being able to see amp draw, rpm, voltage, and "sort of" timing without using a motolyser.

EDIT: After running a 17.5 and a 13.5 the waveform looks more trapezoidal. So I will need to use a comparator still.